How much revenue did Half-Life 2: Episode One make?

Half-Life 2: Episode One is free to play, so there is no copy-sales revenue to estimate.

How many copies did Half-Life 2: Episode One sell?

1.6M to 2.7M copies, based on its 31k Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 1.6M–2.7M; from 31k reviews (Overwhelmingly Positive)

A labeled estimate from the public review count (adjusted for release year), not exact sales. Owner data cross-checked with SteamSpy.

We don't have enough similar games to place Half-Life 2: Episode One in its genre yet, so these are its own numbers, not a genre read.

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